All students are given the opportunity to formalise their effort by enrolling in Practial and Theory qualifications in Australia.
There is a number of possible online and hands-on music boards available to students.
This site from MUSIC in Australia Knowledge Base is a great place to start to find out which on is for you.
Take the time to investigate and register and begin a formal approach to your music progress.
It should be noted that many boards offer popular music and jazz along with different theory/Aural courses to their syllabi. In that way you can select the genre of music you prefer and still obtain a recognised qualification.